| 释义 |
- References
{{DISPLAYTITLE:Delta1 Lyrae}}{{other stars by Bayer designation|Delta Lyrae{{!}}δ Lyrae}}{{Starbox begin
| name = Delta1 Lyrae[1]
}}{{Starbox observe
| epoch = J2000.0
| constell = Lyra
| ra = {{RA|18|53|43.55911}}
| dec = {{DEC|+36|58|18.1920}}
| appmag_v = 5.56[4]
}}{{Starbox character
| class = B2.5V[5][6]
| b-v = −0.15[4]
| u-b = −0.67[4]
}}{{Starbox astrometry
| radial_v = −25.8[9]
| prop_mo_ra = +0.78
| prop_mo_dec = −3.09
| parallax = 3.29
| p_error = 0.25
| parallax_footnote =
| absmag_v = −1.55[13]
}}{{Starbox visbin
| reference=[14]
| period = 88.352 days
| eccentricity = {{Val|0.37|0.03}}
| periarg = {{Val|204.5|7}}
}}{{Starbox detail
| source =
| component1 = δ1 Lyr A
| mass = {{Val|7.9|0.1}}[6]
| radius =
| luminosity = 838[13]
| luminosity_bolometric = 3,620[17]
| temperature = 20,350[17]
| gravity =
| metal_fe = −0.05[13]
| rotational_velocity = 110[20]
| age_myr = {{Val|21.1|2.2}}[6]
}}{{Starbox catalog |{{Starbox reference
| Simbad = 11+Lyrae
}}{{Starbox end}}Delta1 Lyrae, Latinized from δ1 Lyrae, is a binary star system in the constellation Lyra, approximately 1,100 light years away from Earth. The two stars complete an orbit around each other about once every 88 days. They are a spectroscopic binary, meaning the separation between the two is very small, and their orbital velocity is very high.[1][14]The primary member, component A, is a bluish white main-sequence star of the spectral type B2.5V. References1. ^1 2 {{citation | display-authors=1 | last1=Hohle | first1=M. M. | last2=Neuhäuser | first2=R. | last3=Schutz | first3=B. F. | title=Masses and luminosities of O- and B-type stars and red supergiants | journal=Astronomische Nachrichten | volume=331 | issue=4 | pages=349 | date=April 2010 | doi=10.1002/asna.200911355 | bibcode=2010AN....331..349H | arxiv=1003.2335 | postscript=. }}
2. ^1 2 3 {{citation | display-authors=1 | last1=Tetzlaff | first1=N. | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M. | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | issue=1 | pages=190–200 | date=January 2011 | doi=10.1111/j.1365-2966.2010.17434.x | bibcode=2011MNRAS.410..190T | postscript=. | arxiv=1007.4883 }}
3. ^1 {{citation | title=Spectral classification of 239 early-type stars | last1=Guetter | first1=Harry H. | postscript=. | journal=Publications of the Astronomical Society of the Pacific | volume=80 | issue=473 | page=197 | date=April 1968 | doi=10.1086/128611 | bibcode=1968PASP...80..197G }}
4. ^1 {{citation | title=General catalogue of stellar radial velocities | last1=Wilson | first1=Ralph Elmer | date=1953 | publisher=Carnegie Institution of Washington | bibcode=1953GCRV..C......0W | postscript=. }}
5. ^1 {{citation | display-authors=1| last1=Abt | first1=Helmut A. | last2=Levato | first2=Hugo | last3=Grosso | first3=Monica | title=Rotational Velocities of B Stars | journal=The Astrophysical Journal | volume=573|pages=359 | year=2002 | postscript=. | doi= 10.1086/340590 | bibcode= 2002ApJ...573..359A }}
6. ^1 2 3 {{citation | title=UBV photometry of 180 early-type stars | last1=Guetter | first1=H. H. | postscript=. | journal=Publications of the Astronomical Society of the Pacific | volume=86 | pages=795–797 | date=October 1974 | doi=10.1086/129675 | bibcode=1974PASP...86..795G }}
7. ^1 2 3 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
8. ^1 2 {{cite simbad | title= * del01 Lyr | accessdate=October 15, 2007 }}
9. ^1 2 {{cite journal | author=Richardson, E. H. |author2=McKellar, A. | title=Redetermination of the spectrographic orbit of delta1 Lyrae | journal=Publ. Dominion Astrophys. Obs. | year=1957 | volume=10 | pages=407–413 | bibcode=1958PDAO...10..407R }} , p. 412
}}{{Stars of Lyra}} 11 : Lyra (constellation)|Bayer objects|Flamsteed objects|Hipparcos objects|Spectroscopic binaries|B-type main-sequence stars|K-type giants|HR objects|Durchmusterung objects|Suspected variables|Henry Draper Catalogue objects |